42228056 has 32 divisors (see below), whose sum is σ = 85864800. Its totient is φ = 19353600.

The previous prime is 42228041. The next prime is 42228071. The reversal of 42228056 is 65082224.

It is an interprime number because it is at equal distance from previous prime (42228041) and next prime (42228071).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14360 + ... + 17048.

It is an arithmetic number, because the mean of its divisors is an integer number (2683275).

Almost surely, 2^42228056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42228056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42932400).

42228056 is an abundant number, since it is smaller than the sum of its proper divisors (43636744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42228056 is a wasteful number, since it uses less digits than its factorization.

42228056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2859 (or 2855 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 42228056 is about 6498.3117807628. The cubic root of 42228056 is about 348.2306789580.

The spelling of 42228056 in words is "forty-two million, two hundred twenty-eight thousand, fifty-six".